This is my first pool and my first post. We are trying an above ground pool before we make the commitment to dig a huge whole in the ground for a permanent oasis. I will be sure to add a signature so that everyone will know what I am working on.
Also thank you for this forum and for PoolMath! I knew something was not right from the directions I was given, but reading here proved it for sure. I am glad I found you before something went wrong with my water.
I have a:
- 19328 gallon above ground pool (27' x 54")
- Cartridge Filter System
- Two speed Opti-flo pump (Low - Off - High)
- Pool has been up and used every day since mid-April (this is Florida. Water was a cool 72 deg at first.)
Chemical Test Results:
- FC - 6 ppm
- Ph - 7.8
- TA - 100
- CH - 200
- CYA - 98
Temp of pool is 90 degrees.
The pool store said my water was perfect and to keep on going as I have for a perfect pool all year long. However I noticed something that bothered me. My CYA started at 50 ppm and now 3 months later, it has crept up to 98 ppm. I expressed my concern to the pool store since they had a safe range of 50 to 100 ppm. I stated that at this rate, I would be beyond the 100 ppm on my next visit. They just kind of shrugged it off, but it worried me since they had no "Magic way" of getting rid of this CYA once I was beyond their range.
That concern is how I found you! Now I understand the relationship between CYA and FC. I understand that my 3" pucks in my floater is what has caused this CYA to raise at such an alarming rate. I now understand that CH means nothing with a vinyl liner. I also understand that a partial (50% or more) pool drain may be in my future to get the CYA back down to a reasonable level.
So in the meantime, this is what I have done:
1) Replaced pucks with liquid chlorine
2) Purchased a Taylor K-2006 Test Kit
3) Purchased Algaecide 60 Plus - to help keep the algae from starting until I can get the CYA down
My plan is to add preventive Algaecide once a week until I can get the CYA down. I am in Florida where it rains daily. I am hoping that the rain will start diluting the CYA down at a reasonable rate. I know this is probably being too optimistic since I have a cartridge filter so no loss of CYA through backwash. If I find that is not happening then plan B is drain the pool down at least 50% and replace with fresh water. I hate to have to do Plan B since the pool is sparkling clear, no smell, and no algae. However I understand that what you cannot see may be worse than what you can.
Thanks in advance for any comments or suggestions. This forum is a blessing indeed for us first timers who are trying to learn.